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Jefferson researchers unlock key to personalized cancer medicine using tumor metabolism
Date:4/15/2011

PHILADELPHIAIdentifying gene mutations in cancer patients to predict clinical outcome has been the cornerstone of cancer research for nearly three decades, but now researchers at the Kimmel Cancer Center at Jefferson have invented a new approach that instead links cancer cell metabolism with poor clinical outcome. This approach can now be applied to virtually any type of human cancer cell.

The researchers demonstrate that recurrence, metastasis, and poor clinical outcome in breast cancer patients can be identified by simply gene profiling cancer cells that are using ketones and lactate as a food supply.

These findings are reported in the April 15th online issue of Cell Cycle. The investigators are calling this new approach to personalized cancer medicine "Metabolo-Genomics."

High-energy metabolites have long been suspected to "fuel" aggressive tumor cell behavior. The researchers used this premise to generate a gene expression signature from genetically identical cancer cells, but one cell group was fed a diet of high-energy metabolites. These lactate- and ketone-induced "gene signatures" then predicted recurrence, metastasis, and poor survival.

So, it appears that what cancer cells are eating determines clinical outcome, not necessarily new gene mutations.

Michael P. Lisanti, M.D., Ph.D., Professor and Chair of Stem Cell Biology & Regenerative Medicine at Jefferson Medical College of Thomas Jefferson University and a member of the Kimmel Cancer Center at Jefferson, together with other researchers, found that treatment of human breast cancer cells with high-energy metabolites increases the expression of genes associated with normal stem cells, including genes upregulated in embryonic and neural stem cells.

What's more, lactate and ketones were found to promote the growth of normal stem cells, which has critical applications for stem cell transplantation and for a host of different human diseas
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Contact: Steve Graff
stephen.graff@jefferson.edu
215-955-5291
Thomas Jefferson University
Source:Eurekalert

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